<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>level_3</title>
</head>
<body>
<div align="center">
    <h1>Welcome to level_3</h1>

    <a th:href="@{/}">回到index</a>

</div>

</body>
</html>